/*
 * Copyright (c) 2010-2014. Axon Framework
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.axonframework.eventsourcing.eventstore.jdbc;


import org.axonframework.common.jdbc.PersistenceExceptionResolver;

/**
 * SQLErrorCodesResolver is an implementation of PersistenceExceptionResolver used to resolve sql error codes to see if
 * it is an duplicate key constraint violation.
 * <p/>
 *
 * @author Kristian Rosenvold
 * @since 2.2
 */
public class JdbcSQLErrorCodesResolver implements PersistenceExceptionResolver {

    @Override
    public boolean isDuplicateKeyViolation(Exception exception) {
        return causeIsEntityExistsException(exception);
    }

    private boolean causeIsEntityExistsException(Throwable exception) {
        return exception instanceof java.sql.SQLIntegrityConstraintViolationException
                || (exception.getCause() != null && causeIsEntityExistsException(exception.getCause()));
    }

}
